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Batteries

Yu Wang and Katie Zhong, with their gum-inspired electrolyte

Although high-capacity lithium batteries make many of today's mobile electronics possible, they do have one flaw – they occasionally catch fire. This can happen when they overheat, and their liquid acid electrolyte ignites and leaks out. Now, however, scientists at Washington State University have created a gummy electrolyte material that could make such fires a thing of the past.  Read More

The batteries, actually mini fuel cells, could be refilled with sugar as needed (Photo: Sh...

Even today's best rechargeable lithium batteries do lose their ability to hold a charge after a while, and are considered toxic waste once discarded. In just a few years, however, they may be replaced by batteries that are refillable and biodegradable, and that will also have a higher energy density yet a lower price ... and they'll run on sugar.  Read More

An inexpensive high capacity organic battery has been developed by Professor Michael Aziz ...

Researchers at Harvard have developed an inexpensive, high capacity, organic battery that uses carbon-based materials as electrolytes rather than metals. The researchers say the technology stands to be a game-changer in renewable energy storage by solving the intermittent generation problems faced by renewable sources, such as wind and solar. The battery offers large volume electricity storage not possible with solid-state batteries and at a fraction of the cost of existing flow battery technology.  Read More

The Brussels sprout battery, with the Christmas tree

You've probably seen a light powered by a lemon or a clock hooked up to a potato before, but a group in London recently built a similar device using a much smaller, less popular piece of produce. To promote The Big Bang UK Young Scientists & Engineers Fair, a team of designers built the world's first Brussels sprout-powered battery and hooked it up to a set of Christmas tree lights.  Read More

A scanning electron micrograph of the nanostructure of the cathode of a Berkeley Li/S cell...

Batteries. We buy them at the store, use them up, and throw them away without much thought. In reality, however, batteries are remarkably complex electrochemical devices that are continually evolving. The latest example of this comes from the Lawrence Berkeley National Laboratory, where researchers have invented an advanced lithium/sulfur (Li/S) cell that offers a unique combination of energy storage, power, recharge speed, and survivability.  Read More

A prototype lithium-ion battery, that incorporates the polymer

In their continuing efforts to increase the energy density of lithium-ion batteries, scientists have began looking at alternative materials for those batteries' electrodes – materials such as silicon. The problem is, electrodes swell and shrink as they absorb and release lithium ions, causing them to break down over time. This is particularly true of silicon, which is brittle by nature. Now, however, scientists have developed a conductive elastic polymer coating for those electrodes, that heals its own cracks after each use.  Read More

The genetically modified M13 virus creates maganese oxide nanowires with spikes providing ...

In recent years, lithium-air batteries that promise improved power density per pound over lithium-ion batteries have been the subject of much research in the quest to give electronic vehicles greater range. By enlisting the help of a genetically-modified virus, researchers at MIT have found a way to improve the performance and durability of lithium-air batteries, which offer the potential of two to three times the energy density of current lithium-ion batteries.  Read More

Prof. Som Mitra (left) invented a flexible battery with assistance from Zhiqian Wang, a do...

Scientists at the New Jersey Institute of Technology have joined the ranks of those from the Korea Advanced Institute of Science and Technology, Stanford University and LG, by creating prototype flexible batteries. Designed for use in electronic devices with flexible displays, they could conceivably be manufactured in any size or shape, or even made at home.  Read More

A newly developed silicon supercapacitor could allow for the seamless integration of energ...

A team of researchers at the Vanderbilt University in Nashville, Tennessee has designed a supercapacitor made primarily of silicon that has shown much improved power density over its commercially available alternatives. The advance could allow for interesting integration of battery technology in everyday electronics, from solar cells to smartphones.  Read More

Carbon fiber composite panels infused with nano-batteries and super capacitors could repla...

For automobile manufacturers, the electric elephant in the room continues to be bulky and weighty battery packs. This week, Volvo unveiled an innovative potential solution to the problem that it has been working on for the past three and a half years with other European partners; replace steel body panels with carbon fiber composite panels infused with nano-batteries and super capacitors.  Read More

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